
#dropArea {
    width: 300px;
    height: 300px;
    border: 1px dashed gray;
    margin-bottom: 20px;
  }
  #dropArea p {
    text-align: center;
    color: #999;
  }
  #dropArea.highlighted {
    background-color: #ddd;
  }
  #imagePreview {
    max-height: 250px;
    overflow-y: scroll;
  }
  #imagePreview img {
    width: 100%;
    display: block;
    margin: auto;
  }